Page lock for printers&#39; forms



Sept. 15, 1931. H. B. OHLSON 1,823,060

PAGE LOCK FOR PRINTERS FORMS Filed Jan. 11, 1930 Fig.1. LgL 1-; a 6 5 Fig. 2. Fig.3. 0/. 4 g F Patented Sept. 15, 1931 rszaeta PATENT @FFECE HJALMAR IBERNHARD OHLSON, OF STOCKHOLM, SWEDEN PAGE LOOK FOR PRINTERS FORMS Application filed January 11, 1930, Serial No. 420,218, and in Sweden February 9, 1929.

Compositors frames, so-ca-lled page looks, are known for locking the set-up type, which frames consist of separate parts having cutout portions in which locking noses engage.

The construction is such that, when fitted together alternately, a frame is formed having play in each corner. This play is however kept comparatively small in the known page looks merely for the purpose of being able to carry out slight paraganation.

In order to overcome the existing objections a device is provided according to the invention for holding together pages for compositors frames and has for its object the obviating of the complicated and timewasting cording of the pages so that when carrying out corrections and lifting out type or rows of type the frame parts can remain in engagement. The invention therefore renders it possible to retain the known play as large as possible according to these requirements. 'The corners of the frame parts are connected according to the invention by similar elements which are so arranged, that 95 they are inserted in the corresponding spaces after the fitting together of the frames, where they remain during the printing.

An embodiment of the invention is illustrated by way of example in the accompanying drawings in which Fig. 1 is a top plan view of a side bar of the frame.

Fig. 2 shows abuilt up frame with the parts pushed together.

Fig. 3 is a similar view to Fig. 2 the parts being pulled apart.

Fig. 4 is a top plan view of oint between two parts.

Fig. 5 shows a spreading pin.-

Fig. 6 shows in perspective view a page of set-up type to be held by a frame according to the invention.

The frame according to the invention consists of known side bars a. Each side bar has a hook shaped cut out portion 6 of hookshaped cross section at one end and a nose 0 also hook shaped. When fitting together the separate side parts to form a frame, the locking nose 0 is inserted in the cut out portion Z2 (Fig. 4). The locking nose and the ing pin 6, Fig. 5, or similar element, is in-.

serted in each of the spaces d formed in the corners of the built up frame, which pins hold the parts of the frame in their pushed together position. The frame proper can consist of side bars, each consisting of one piece. These side bars may however, according to the invention and as shown in Figs. 3 and 6, consist of two or more parts a, a the locking noses and cut out portions of which are so constructed, that the parts a, a when fitted together in the longitudinal direction lock tightly together.

I claim A page lock for printers forms, comprising in combination side bars having at one end a hook shaped cut out portion, a hook shaped extension at the other end of said side bar of the same size as said out out portion adapted to loosely engage in the out out portion of an adjacent bar so that the two bars form a corner, and spring pins adapted to be inserted in the free spaces left between said hook shaped extensions and said hook shaped cut out portions adapted to clamp said bars tightly together during the printing operation.

In testimony whereof I affix my signature.

HJALMAR BERNHARD OHLSON. 

